6 articles for “Optimistic Time (OT)”

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Research ArticleOpen accessEvery word in the titleOn Optimistic Concurrency Control for Real-Time Database SystemsAmer A. AliThe performance of database transaction processing system can be profoundly affected by the concurrency control method employed since it is necessary to preserve database integrity in a multi-user environment. In addition to satisfying the consistency requirement as in traditional database system, real-time database systems must also satisfy timing constraints. In this study we present a virtual run policy for the … …American Journal of Applied Sciences, Vol. 3, Issue 2 · 28 Feb 2006 · 6,901 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleReal-time Optimistic Concurrency Control based on Transaction Finish DegreeHan Qilong, Hao ZhongxiaoConcurrency control is one of the main issues in the studies of real-time database systems. Optimistic concurrency control algorithms have the attractive properties of being non-blocking and deadlock-free. However, they have the problems of late conflict detection and transaction restarts. Although the number of transaction restarts is reduced by dynamic adjustment of serialization order in real-time database systems, they are … …Journal of Computer Science, Vol. 1, Issue 4 · 31 Dec 2005 · 6,688 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsA Genetic Algorithm Based Multi Objective Service Restoration in Distribution SystemsSathish Kumar Kannaiah, Jayabarathi Thangavel, D. P. KothariProblem statement: A Genetic Algorithm (GA) used here to find exact or approximate solutions to optimization and search problems. Genetic algorithms are a particular class of evolutionary algorithms that use techniques inspired by evolutionary biology such as inheritance, mutation, selection and crossover. Approach: GA is a method for search and optimization based on the process of natural selection and evolution. … …Journal of Computer Science, Vol. 7, Issue 3 · 9 Mar 2011 · 7,029 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSpatial-Temporal Analysis of Temperature Trend and its Possible Effects on Water Resources and Water Uses in Climatic Zones of Iran's Zayandehrud River BasinAli Hasantabar-Amiri, Kaveh Ostad-Ali-Askari, Ali Heidarian et al.The minimum, moderate and maximum temperature trends at seasonal time scale in 5 climatic zones using 37 meteorological stations in Zayandehrud river basin was studied regionally and the relationship to water resources, water uses of each zone and its possible effects were determined. The results showed that the majority of the climatic zones will have an increasing trend in spring, … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 2 · 27 Jun 2019 · 8,041 accessesView PDF Cite

Research ArticleOpen accessIn the abstractINTELLIGENCE MOBILE AND DIGITAL BROADCASTING TECHNOLOGY TO SUPPORT LEARNING FOR DISABILITIES STUDENTSSettachai Chaisanit, Chiraphorn Chomyim, Samphan ChandeeUsage of mobile digital broadcasting technologies in education is the most important of required technologies to provide main goals in distance education. It offers learning and data accession opportunities to learners notwithstanding time and place. In academic education, it was found that one of the critical problem is the appreciate education tool for disabilities students. Students with special education have … …Journal of Computer Science, Vol. 9, Issue 10 · 18 Sep 2013 · 7,425 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEconomic, Social and Political Scenarios of Mexico in the Next Two DecadesJosè G. Vargas-Hernàndez, Mohammad Reza NoruziProblem statement: This research proposal aims to analyze the economic, social and political foreseeable scenarios of Mexico by the year 2030. Approach: Starting from the analyzes of the recent economic, social and political developments, to searching the trends in specific economic issues such as international commerce, energy, employment, environmental constraints; social trends such as demographic transition, fertility, population growth, aging, … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 7,650 accessesView PDF Cite